Attachment for sewing machines



Jan. 14, 1930.. w. C. l -|AKE ,7 7

ATTACHMENT F OR SEWING MACHINES Filed March 7 1929 Patented Jan. 14,1930 UNITED STATES WILLIAM C. HAKE, OF ST. LOUIS, MISSOURI ATTACHMENTFOR SEWING MACHINES Application filed March 7,

This invention relates to an attachment-for sewing machines particularlyadapted for feeding tape to forma French binding for shoes.

An object of the invention is to provide an attachment whereby tape froma continuous row may be fed to the stitching point for attachment to theedge of shoe uppers, which attachment is adapted to wipe out the upper.10 edge of the tape and to prevent it fromcoming in contact with theneedle in the stitching operation.

Another object of the invention is to provide an attachment of the kinddescribed having an adjustable device for holding the top margin of thetape above the stitching point, said attachment being adapted for adjustment to tape of difierent widths.

Additional advantages of the construction will be apparent from thefollowing detailed description taken in connection with the accompanyingdrawing, in which 7 Fig. 1 is a front elevation of the attachment andassociated parts. Fig. 2 is a side view of the same elements. Fig. 3 isa transverse section showing the parts in detail.

Fig. 4: is a front face view of the roller with 'the adjustable deviceassociated therewith.

Fig. 5 is a detailed view of the mounting for the adjustable device.

Fig. 6 illustrates a portion of a shoe upper with a tape attached to themargin thereof.

Fig. 7 is a sectional view showing the meansfor adjusting the device fortape of different.

widths. e In the embodiment of the invention illustrated in the drawingthe attachment is shown in association with a sewing machine having atop arm 1 illustrated fragmentarily in Figs. 1 and 2. A needle bar 2carrying a'needle 3 is mounted in the arm 1 for vertical reciprocation.The arm 1 has connected therewith a bracket 4:. An arm 5 is removablyattached to the bracket a, said arm 5 curving inwardly and downwardly.The arm 5 has connected to its lower end a stud bolt 6 which constitutesa shaft for a presser roller 7 The front face of the presser roller isdishedas clearly shown in Fig. 3 of the drawing, and the periphery 1929.Serial No. 345,018.

of the roller comprises a serrated face 8. The roller 7 is mounted uponits shaft in a forwardly inclined position as best shown in Fig. 3 ofthe drawing.

The mechanism for feeding the tape includes an arm 9 removably attachedto the bracket 4, said arm extending rearwardly and member that includesa plate 10 having an eye 11 attached to its rear edge, said plateextending at the back of the attachment and communicating with a tapefeed tube 12 that extends across the front face of the presser r ller.The tape feed tube comprises a front and rear wall joined together sothat said walls lie close together and so that the vertical dimension issufficient to accommodate, at its inlet end, tape of varying widths fedto the stitching point. The forward throat ofthe tube is deflectedslightly outwardlyat 13 for turning the lower marginal edge of the tapeto meet the surface of the shoe upper in a plane parallel therewith atthe stitching point, in cooperation with the beveled wall of the presserroller. The forward throat of the tape tube 12 has a single wallextension 14,

the upper marginal edge of-which is slightly notched at 15, as shown inFig. 2. of the drawing. The purpose of the extension 14 is to hold theupper marginal edge of the tape out of the path of the needle.

. In order to accommodatethe device for feeding different widths oftape, an adjustable member isprovided to engage the upper marginal edgeof the tape as it leaves the throat of'the tape feed tube. This membercomprises a stem 16 mounted in a bracket 17 attached to thefront face ofthe upper portion of the arm 9. An expansion spring 18 is mounted on thestem 16"between the lower face of the bracket 17 and a flange 19 on thestem. An adjusting nut 20 is mounted over a threaded end of the stem forraising the stem in the bracket17 against the tendency of the spring 18to depress the stem. Thus, thestem may be raised and lowered by'theoperator. When the proper adjustment of the stem has been. attained, itmaybe setvin position by a set screw 21 threaded into'the face of thebracket 17 and against the stem.

downwardly and supporting a tape guide The bracket 17 is connected withthe arm- 9 by a stud 22 that extends through an elongated opening 23 inthe arm 9. A nut 24 threads over the extremity of the stud 22 so that aslight longitudinal adjustment of the bracket 17 may be effected.Below'the flange 19 is an extension of the stem constituting an angulararm-25, the lower portion of which extends rearwardly and downwardly toa point below the upper edge of the tape feed tube. The extremity 26 of"the arm 25 is bifurcated and is inclined inwardly to an apex, clearlyshown in Fig. 4 of the drawing. The space between the armsformingthebifurcated extremity constitutes a channel-through which theuppermarginal edge ofthe tape passes as-it' is fed through the clev-ice.By varying the tension ofthe spring 18, the elevation of the seat of thechannel fo'rrnediirthe bifurcated extremity 26 may be'accuratelyadjusted. Therefore, when the tape of varyingwidths is used, thepressure onthe upper marginal edge thereof may be accurately adjusted"so that the lower marginal edge of the tape is forced into the lowerchannelin the tape feedingtube, toward the marginal edge thereof, alongan accurately positioned line in respect of the needle which passesthrough the tape as it leaves the deflected plortion 13 of the throat ofthe tube. Theextremity 26 also serves to hold the upper marginaledgeof'the tape in a vertical positionand to prevent it from curlinginwardly and therefore out of 'the path of the needle The device is soconstructed asto accurately lay the tape at the stitching point,regardlessof the' nature'of the contour ofthe shoeupper to which thetape is to be attached.

I am aware that the invention" may be va-rie'din numerousparticularswithout" departing from the nature and principle thereof. r

I'- do" not limit myself u'nessentially, but

what I claimand' desire to secure-'- by Letters; Patentis:'

1 In a. sewing machine, the combin-ation with stitchlng IHBClliL'IlISHIand feeding mechanrsm, said feeding mechanism lncluding a Mpressenroller having a concave face; of an attachment adapted to feedtape tothe stitching'po'int comprising'the tape feed'tubearranged'vertically adjacent to the concave face ofsaid roller, andhaving an outwardly turned turn-ed portion near it'slower'marginal edge,whereby the tape is fed against the concave face of the presser rollerand-the outer edge thereofis-presented to the stitching point insubstantially a horizontal plane; and'an adjustable member having avertical channel therein fer-engaging the upper marginal edge oftheta'p'el 2;] In a sewing machine, the combination with stitchingmechanism andfeedin'gmech anism, saidfeeding'mech'anism including apresser roller having a concave face; of an attachment adapted to feedtape to the stitching point comprising the tape feed tube arrangedvertically adjacent to the concave face of said roller, and having anoutwardly turned portion near its lower marginal edge, 1-

whereby the tape is fed against the concave face'of thepresser rollerand the outer edge thereof is presented to the stitching point insubstantially a horizontal plane; and an adjustable member comprising astem having an angular extremity adapted to engage the upper marginaledge of the tape and to hold it in substantially vertical position witha predetermined downward pressure thereon.

3. In a sewing machine, the combination withstitching: mechanismand Ifeeding mechanism, said feeding mechanism includ ing a-p'resser' rollerhaving a concave face; of an attachment adapted to feed tape to thestitching pointcomprising the tape feed tube arranged verticallyadjacent to the-concave face of said-roller, and-having anoutwardlyturned portion near its lower marginal edge, whereby the tape is fedagainstthc concave faceofthe presser roller andthe outer edge thereof ispresented to the stitching point in substantially a horizontal plane;and an adjustable member comprising vertically movable stem, a springnormally actuating said stem downwardly, an'adjusting nut operating inopposition to said spring, an -angular extensionfo'r said stem having achannel form'ed'in its-lower end, saidcha-nnel adapted to provide aguideway for the upper marginal edge of the tape 'and't'o' hold theupper m'arg-inal edge of the tape'in' a vertical position and to forcethe body of the tape againstthe lower wall of the tape feed tu e.

41: Tina sewing machine, the combination with stitching: mechanismandfeeding mechanism, said feeding mechanisrn includ-' ing a presserrollerhaving a" concave face of-an attachment adapted to feed tapeto thestitching point comprisingthe tape feed tube arranged verticallyadjacent to'the concave face of -sa idfroller, and hfaving an outwardlyturned portion near its lowermarginal-edgc, 'whereby'the tape is fedagainst the concave face of' the presserroller and the outer edgethereof is presented to the stitching point-in substantially ahorizontal plane; and an adjustable member comprising a verticallymovable stem; a spring: normally actuating said stem'downwardly, anadjusting nut'opcrating in opposition to said spring, an angularextensionfor'said stem having-a channel formed inits lower end, saidchannel adaptedto provide a guideway' for the upper marginal edge of thetape and to'holdthe upper marginal edgeof thetape in a ver'- ticalposition and to force the body of the tape against the lower wall of thetape feed tube, and -asetscrew adapted to lock the stemin its selectediadjastew positions! 5. In a sewing machine, the combination I withstitching mechanism and feeding mechanism, said feeding mechanismincluding a presser roller having a concave face; of an attachmentadapted to feed tape to the stitching point comprising the tape feedtube arranged vertically adjacent to the concave face of said roller,and having an outwardly turned portion near its lower marginal edge, anda single wall extension from the upper edge of the throat thereof,whereby the tape is fed against the concave face of the presser rollerand the outer edge thereof is presented to the stitching point insubstantially a horizontal plane; and an adjustable member having avertical channel therein for engaging the upper marginal edge of thetape.

WILLIAM C. HAKE.

